998888898 has 32 divisors (see below), whose sum is σ = 2310690816. Its totient is φ = 281957328.

The previous prime is 998888897. The next prime is 998888903. The reversal of 998888898 is 898888899.

It is not an unprimeable number, because it can be changed into a prime (998888897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139786 + ... + 146757.

It is an arithmetic number, because the mean of its divisors is an integer number (72209088).

Almost surely, 2^998888898 is an apocalyptic number.

998888898 is an abundant number, since it is smaller than the sum of its proper divisors (1311801918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998888898 is a wasteful number, since it uses less digits than its factorization.

998888898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286638.

The product of its digits is 191102976, while the sum is 75.

The square root of 998888898 is about 31605.2036538289. The cubic root of 998888898 is about 999.6294954100.

Subtracting from 998888898 its reverse (898888899), we obtain a palindrome (99999999).

The spelling of 998888898 in words is "nine hundred ninety-eight million, eight hundred eighty-eight thousand, eight hundred ninety-eight".